diff --git a/pkgs/development/python-modules/tianshou/default.nix b/pkgs/development/python-modules/tianshou/default.nix
index 2336768719cf..7cb9052c2d02 100644
--- a/pkgs/development/python-modules/tianshou/default.nix
+++ b/pkgs/development/python-modules/tianshou/default.nix
@@ -47,7 +47,7 @@
 
 buildPythonPackage rec {
   pname = "tianshou";
-  version = "1.1.0";
+  version = "1.2.0";
   pyproject = true;
 
   disabled = pythonOlder "3.11";
@@ -56,7 +56,7 @@ buildPythonPackage rec {
     owner = "thu-ml";
     repo = "tianshou";
     tag = "v${version}";
-    hash = "sha256-eiwbSX8Q3KF6h7CfjuZ+7HlXwpvLga1NVr3e+FkPaHc=";
+    hash = "sha256-lJAxjE+GMwssov1r4jOCOTf5Aonu+q6FSz5oWvZpuQQ=";
   };
 
   pythonRelaxDeps = [
@@ -182,7 +182,7 @@ buildPythonPackage rec {
   meta = {
     description = "Elegant PyTorch deep reinforcement learning library";
     homepage = "https://github.com/thu-ml/tianshou";
-    changelog = "https://github.com/thu-ml/tianshou/releases/tag/v${version}";
+    changelog = "https://github.com/thu-ml/tianshou/releases/tag/${src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ derdennisop ];
   };